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Erschienen in: Polymer Bulletin 8/2012

01.05.2012 | Original Paper

Synthesis and photovoltaic properties of alternative copolymers of benzo[1,2-b:4,5-b′]dithiophene and thiophene

verfasst von: Jie Min, Bo Peng, Youjun He, Maojie Zhang, Zhi-Guo Zhang, Jing Zhang, Xia Guo, Chaohua Cui, Dan Deng, Yongfang Li

Erschienen in: Polymer Bulletin | Ausgabe 8/2012

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Abstract

Two conjugated polymers containing benzodithiophene (BDT) unit and the unit of thiophene or thieno[3,2-b]thiophene, P(BDT-T) and P(BDT-TT), were synthesized by Pd-catalyzed Stille coupling method. The UV–Vis absorption, thermal, and electrochemical properties of the two polymers were characterized. Photovoltaic properties of the polymers were studied by using the polymers as donor and PC70BM as acceptor with a weight ratio of polymer: PC70BM of 1:1.5. The power conversion efficiencies of the PSC devices based on P(BDT-T) reached 2.05% with an open-circuit voltage of 0.75 V, a short-circuit current of 4.5 mA cm−2, and a fill factor of 0.61, under the illumination of AM1.5, 100 mW cm−2.

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Metadaten
Titel
Synthesis and photovoltaic properties of alternative copolymers of benzo[1,2-b:4,5-b′]dithiophene and thiophene
verfasst von
Jie Min
Bo Peng
Youjun He
Maojie Zhang
Zhi-Guo Zhang
Jing Zhang
Xia Guo
Chaohua Cui
Dan Deng
Yongfang Li
Publikationsdatum
01.05.2012
Verlag
Springer-Verlag
Erschienen in
Polymer Bulletin / Ausgabe 8/2012
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-011-0672-z

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